What is the function of the Constant Speed Unit (CSU) in aircraft propulsion?

The function of the Constant Speed Unit (CSU) in aircraft propulsion is to maintain a constant RPM of the propeller. This component plays a critical role in optimizing the efficiency and performance of the aircraft's engine by automatically adjusting the pitch angle of the propeller blades in response to changes in power demands and flight conditions. By doing so, the CSU ensures that the propeller operates at an optimal speed, allowing the engine to deliver the highest possible thrust while minimizing fuel consumption and maintaining engine performance across various flight phases.

This constant adjustment helps improve the aircraft's overall operational efficiency and performance, which is crucial for maintaining safety and maximizing range. The ability of the CSU to stabilize the propeller speed, regardless of variations in engine power output, is vital for smooth operations during takeoff, cruising, and landing.